Tubular radiator core



Oct- 13,1925.

A..B. MODINE TUBULAR' RADIATOR CORE Filed Jan. 2, 1920 2 Sheets-Sheet 1 2 Sheets-Sheet 2 A. Bi'MODINE TUBULAR RADIATOR CORE Filed Jain. 2, 1920 p a citizen of the United States, residin'gYat Patented ca. 13, 1925.

UNITED STATES PATENT. OFFICE.

men' mom-NE, .01" BACI-NE, Wisconsin.

. wanna. imnm ron. conn' Application filed January 2, 1920. Serial No.- 348,989.

Core, of Which the following is a description.

My invention relates to coolers. or, con-' densers of the kind employed for. controlling thetemperature of'automobile motors and the like for bringing the fluid to be cooled into the most intimate relation possible with the cooling fluid.

'scribed'and more particularly pointed out The object of my invention is to provide a light, simple, strong, reliable ,and highly efiiclent device of the kind described, where-. in the entire surfaceofeboth sides of the walls of the cooling channels are exposed in order to secure'the maximum transmission of heat to the cooling fluid.

. To this end my invention consists in the novel construction, arrangement and combination of parts herem shown and dein the claim.

Inthe accompanying drawings wherein like or similar referencecharacters indicate like or corresponding parts:

Fig. 1 is a perspective view of a portion of a radiator core embodying my improvement..

' Fig. 2 is a perspective view' of a channel and'a spacer in .their respective vertical posi; tion but separated slightly laterally to more clearly show the construction and relation of the parts.

Fig. 3 is 'a perspective view showing two channels and a slightly modified fornr of spacer arranged as shown in Fig.2.

Fig. 4 is a front elevation of a rtion of a. rad'ator showing another 'mod fied form of spacer.

Fig. 5 is a section taken substantially on line 5-5 of Fig. 4.

Fig. 6'is a front elevation of a portion of a radiator showing another modified form of s acer;

Fig. 7 is-a perspective view of the spacer shown in Fig. 6..

Fig. 8 is a front elevation ,of a portion of 'a radiator showing yet another modified form of spacer,

Fig. S} is aperspective view of the spacer shown in Fig.8.

In the form shown my improved radiator to produce a fluid tight tube.

- jecting of one of its angles,

tween the tubes preferably between the apexes ofthe adjacent bends or corrugations' of the tubes the whole bring connectedby soldering, brazing or other suitable means for permanently securing the severalparts' -1n osltion;

11 the form shown each-"tube comprises a pair of substantially similar strips 1 of suitable material. having an off-set 2 near each edge and a fin or margin 3 projecting beyond the off-set portion so formed that when the strips are brought together back toback, the margins will contact through--' out their length and. width afl'ording a convenient method of permanently connecting the strip by solder or other convenient means InZ'the preferred construction angle of he adjacent corrugations being the tubes are corrugated or plicated transversely, the

the apexes ofthe adjacent angles of the tubes may be connectedthus forming a succession of substantially hexagonal spaces at each face of the radiator core.

Any suitable means may be provided for connecting the several tubes and rigidly holding them .in position. In the form shown in Figs. 1 and 2 the spacer 4 comprises a strip sponding1 in width to the width of the pro- I nor margin 3 bent upon itself as at 5 and with the ends 6 and 7 bent outward to fit against the fin on the respective sides of suflicient length to reach to the 'next" adjacent' angle of the fin while the end 5 of the spreaders' engages the apex of the fin of the next adjacent tube, thus accurately maintaining the parts in positionas shown in Fig. 1. In this form shown also the surfaces of the tubes are each roughened or checkered in any suitable or convenlent manner, suc for example-as by small corrugations or indentations formed in the tube walls to increase the radiating surface of the tubes and also to increase the turbulence of'the air passing by increasing thetransmission of heat from the fluid passing through the tubes to the air passing between them.

of suitable material corre-- the parts 6 and 7 being between the. tubes there-- and successively bent as shown at 9, and '11 thus providing a portion 12 adapted to bear against one of the angularfaces of l the fin, a part 14 extendingfrom the apex of the angle of the fin 'upon one tube to the apex of the angle of the fin of the next adjacent tube and a part 15 formed to bear against the angular faces of the fin of the next adjacent tube, these angles and parts being successively repeated through the height of the radiator.

In the form shown in Figs. 4 and 5 the spacers 16 are formed substantially as shown in Figs. 1 and 2 except that the several spacersfor each pair of'tubes is formed in a single strip extending from the top to thebottom of the radiator and bent in the same general way to form the distance pieces 17, 18 ahd'19 asshown in detail in Fig. 2.

, In the form shown in Figs. 6 and 7 the spacer 20 corresponds to the form shown in Fig. 3 except that a succession of separate spacers 20 are provided in place of the strip of connected spacers as shown in Fig. 3. The general form of thecspacer 20 however remains substantially the same, that is, the parts 21, 22 and 23 correspond to the parts 12,'14 and 15 respectively.

In the form shown in Figs. 8 and 9 the slacer 24 is formed of two pieces 'ofsuit-.

able width rigidly connected as by a rivet 2 5 and with the ends 26 and 27 of each piece bent outward at each end as shown, adapted to bear against the angular *faces of the fins of the adjacent tubes as shown in Fig. 8 tohold the tubes in positlon. In each-case the-spacers are preferably assembled with the several pairs of plates comprising'the' tubes and all soldered or brazed panying drawings I have shown inyim-- proved radiator arranged to produce ahex- 'agonal cellular appearance at each end, it

is obvious that the form or arrangement of tubes and spacers can be altered in various ways toproduce other forms or configurations'without departing fromthe spirit of my invention, hence, I do 'not wislrto be understood as limiting myself to the exact form or construction shown.

What I claim as new and desire to secure by Letters Patent is:

A radiator core comprising a plurality of tubes each comprising a-pair of alternately bent zigzag plates united'in parallel to form zigzag tubes each tube provided with a zigzag projecting fin extending along each side centrally of the opposed walls of said tube, said tubes spacedapart so that the opposed surfaces of adjacent tubes are inclined relatively of one another through out their height, in combination with a plurality of independent separately formed spacers each of a width equal to 'the width of said fins. and positioned between the fins of adjacent tubes and bearing thereagainst from the apex of a fin to its base to space said tubes apart to fornla continuous air space therebetween throughout their opposed areas, said airspace'varying in size throughout its vertical extent.

y In testimony whereof, I have hereunto signed my name. v

ARTHUR B. MODINE. 

